CN115679814B - Mounting method of assembly type 0# block bracket - Google Patents
Mounting method of assembly type 0# block bracket Download PDFInfo
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- CN115679814B CN115679814B CN202211017650.8A CN202211017650A CN115679814B CN 115679814 B CN115679814 B CN 115679814B CN 202211017650 A CN202211017650 A CN 202211017650A CN 115679814 B CN115679814 B CN 115679814B
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Abstract
The invention relates to the field of bridge building construction, in particular to an installation method of an assembly type 0# block bracket, which comprises the following installation steps: step A: installing an embedded part, and B: c, mounting brackets, and step C: d, assembling the main longitudinal beam and the inclined strut, and step D: e, hoisting the tripod, and step E: adjusting the inclined strut, and step F: installing a transverse connection, and G: mounting a transverse distribution beam, and step H: and installing the longitudinal distribution beam. The mounting method of the assembly type 0# block bracket provided by the invention provides a whole set of mounting steps of the assembly type 0# block bracket, can effectively guide the high-efficiency and high-precision mounting of the assembly type 0# block bracket, and is beneficial to large-scale popularization and application of the assembly type 0# block bracket.
Description
Technical Field
The invention relates to the field of bridge building construction, in particular to an installation method of an assembly type 0# block bracket.
Background
With the strong national demand for the development of bridge construction towards safety, rapidness and environmental protection, the assembly type technology gradually becomes the mainstream mode of bridge construction. The high-pier continuous beam bridge/continuous rigid frame bridge No. 0 block is mostly cast by adopting a triangular bracket, and the existing triangular bracket is mainly installed by mainly taking welding as a main part and taking assembly as an auxiliary part. From the current state of research and application, a bracket installed by adopting a welding mode has a series of problems which are mainly represented as follows: 1. the welding installation is almost high-altitude operation, the safety risk of operators is high, and the welding quality of the rod piece is difficult to ensure; 2. the bracket is required to be cut when being dismantled, and the influence on the pier body of the pier column is large; 3. the bracket has poor structural integrity and applicability after being dismantled, is difficult to recycle, has large carbon emission and poor economy, and does not meet the requirement of the current country on the development of double carbon; 4. welding slag, scrap steel and other garbage exist in a welding site, and the environment friendliness is poor.
The problem that welding formula bracket exists has just been solved in the suitable fortune of assembled 0# piece bracket, and assembled 0# piece bracket mainly includes anchor system, tripod, cross connection, vertical distribution roof beam and horizontal distribution roof beam, and wherein the tripod comprises main longitudinal, bracing and connecting piece. However, the application scale of the assembly type 0# block bracket in China is limited, and industrialization is not formed, the main reason is that the assembly type 0# block bracket has high requirement on installation accuracy, and a mature and standard application technical system does not exist in China at present to guide the efficient and high-accuracy installation of the assembly type 0# block bracket, so that the potential value and benefit of the assembly type 0# block bracket cannot be reflected.
Therefore, it is necessary to provide a method for installing an assembly type 0# block bracket, so as to improve the installation accuracy and the construction efficiency of the bracket, shorten the construction period while ensuring the construction safety, and play a role in protecting the driving and navigating for the large-scale popularization and application of the assembly type bracket.
Disclosure of Invention
The invention aims to: aiming at the problems in the background art, the mounting method of the assembly type 0# block bracket is provided, so that the assembly type 0# block bracket is safe, efficient and economical in mounting, and large-scale popularization and application of the assembly type 0# block bracket are facilitated.
In order to achieve the above purpose, the invention provides the following technical scheme:
an installation method of an assembly type 0# block bracket comprises the following installation steps:
step A: installing an embedded part: pre-burying a first embedded part and a second embedded part on a pier stud, wherein the second embedded part is positioned at the upper part of the first embedded part, and an operating platform is erected below the first embedded part and is connected with the pier stud;
and B: installing a bracket: the bracket comprises a lower bracket and an upper bracket, the lower bracket is connected to the first embedded part, and the upper bracket is connected to the second embedded part;
and C: assembling a main longitudinal beam and an inclined strut: hinging a first hinged end of the main longitudinal beam with one end of the inclined strut, and connecting the main longitudinal beam with the inclined strut by using a chain block to enable the chain block, the main longitudinal beam and the inclined strut to form a tripod;
step D: hoisting the tripod: integrally hoisting the tripod, and then hinging the second hinged end of the main longitudinal beam with the upper bracket, wherein the height from the bottom of a zipper of the chain block to the operating platform is less than or equal to 1.5m;
step E: adjusting the inclined strut: an operator pulls the zipper on the operating platform to adjust the angle between the inclined strut and the main longitudinal beam, so that one end of the inclined strut, which is far away from the main longitudinal beam, can be hinged with the lower bracket, the tripod is mounted, and then the chain block is dismounted;
step F: installing a transverse connection: the transverse link is connected with the inclined strut;
step G: installing a transverse distribution beam: the transverse distribution beam is connected with the main longitudinal beam;
step H: installing a longitudinal distribution beam: the longitudinal distribution beam is connected with the transverse distribution beam.
The invention discloses an installation method of an assembly type 0# block bracket, which effectively solves the problems of high risk, low precision, poor efficiency and the like of the traditional bracket installation, greatly improves the safety on the premise of meeting the installation quality requirement, obviously improves the installation precision of the bracket, obviously shortens the construction period and has better comprehensive benefit.
According to the mounting method of the assembly type 0# block bracket, disclosed by the invention, an operator can adjust the chain block through the zipper of the chain block on the operating platform so as to adjust the angle between the inclined strut and the main longitudinal beam, so that the inclined strut can be hinged with the lower bracket, the high-altitude operation risk of the operator for adjusting the main longitudinal beam and the inclined strut is reduced, and the mounting process of the assembly type 0# block bracket is safer.
According to the mounting method of the assembly type 0# block bracket, the angle between the main longitudinal beam and the inclined strut is adjusted by adopting the chain block, the operation is simple and convenient, the adjusting efficiency is high, the mounting efficiency of the assembly type 0# block bracket is greatly improved, the mounting period of the assembly type 0# block bracket is shortened, the cost of the chain block is low, the purchase is convenient, and the mounting cost of the assembly type 0# block bracket is effectively reduced.
Preferably, the step C further comprises: the chain block is connected with the main longitudinal beam lifting lug.
Preferably, the step C further comprises: the chain block is connected with the inclined support lifting lug.
Preferably, the hinge joint is a pin shaft connection, and safety pins are inserted into two ends of the pin shaft to prevent the pin shaft from falling off.
Preferably, the step a further includes an embedment positioning method:
the method comprises the following steps: pre-burying the first embedded part at one side of the pier stud, and positioning and fixing the first embedded part according to the elevation of a design drawing;
step two: pre-burying the first embedded part at the opposite side of the pier stud, and checking the elevation of the first embedded part at the opposite side of the pier stud through the first embedded part at one side of the pier stud;
step three: after the elevation check of the first embedded part on the opposite side of the pier stud is finished, measuring and fixing the first embedded part;
step four: and installing the second embedded part on the pier stud, wherein the second embedded part takes the elevation of the first embedded part as a reference, and the rest installation steps are the same as the installation steps of the first embedded part.
Preferably, in the step a: when the embedded parts are installed on the pier stud, a tensioning structure is installed, wherein the tensioning structure comprises a round steel pipe and a high-strength steel bar, and the installation method of the tensioning structure comprises the following steps:
step S1: when the embedded part is installed on the pier stud, the round steel pipe is installed at the same time, and both ends of the round steel pipe are connected with the embedded part reserved holes in the embedded part on the same side of the round steel pipe, so that the round steel pipe penetrates through the pier stud;
step S2: installing the high-strength steel rod, wherein the high-strength steel rod penetrates through the round steel pipe, and the length of the two ends of the high-strength steel rod extending out of the outer surface of the pier column is greater than or equal to 1m;
b, pre-tensioning the high-strength steel bar after the step B;
and E, performing secondary tensioning on the high-strength steel bar after the step E.
Preferably, the high-strength steel bar is tensioned in a single-side tensioning mode.
Compared with the background art, the invention has the beneficial effects that:
1. the invention provides a method for mounting an assembly type 0# block bracket, which provides a whole set of steps for mounting the assembly type 0# block bracket, effectively solves the problems of high risk, low precision, poor efficiency and the like of the traditional bracket mounting, greatly improves the safety on the premise of meeting the mounting quality requirement, obviously improves the mounting precision of the bracket, obviously shortens the construction period and has better comprehensive benefit.
2. According to the mounting method of the assembly type 0# block bracket, disclosed by the invention, an operator can adjust the chain block through the zipper of the chain block on the operating platform so as to adjust the angle between the inclined strut and the main longitudinal beam, so that the inclined strut can be hinged with the lower bracket, the high-altitude operation risk of the operator for adjusting the main longitudinal beam and the inclined strut is reduced, and the mounting process of the assembly type 0# block bracket is safer.
3. According to the mounting method of the assembly type 0# block bracket, the angle between the main longitudinal beam and the inclined strut is adjusted by adopting the chain block, the operation is simple and convenient, the adjusting efficiency is high, the mounting efficiency of the assembly type 0# block bracket is greatly improved, the mounting period of the assembly type 0# block bracket is shortened, the cost of the chain block is low, the purchase is convenient, and the mounting cost of the assembly type 0# block bracket is effectively reduced.
Drawings
FIG. 1 is a flow chart of the installation of a fabricated 0# block bracket of the present invention.
Fig. 2 is a schematic view of the structure of the fabricated 0# block bracket of the present invention.
Fig. 3 is a schematic view of an embedment mounting of the present invention.
Fig. 4 is a schematic view of the corbel installation of the present invention.
Fig. 5 is a schematic view of the assembled main longitudinal beam and diagonal brace of the present invention.
Fig. 6 is a schematic structural view of the main longitudinal beam of the invention.
Fig. 7 is a schematic view of the structure of the inclined strut of the invention.
Fig. 8 is a schematic view of the mounting tripod of the present invention.
Fig. 9 is a schematic view of the mounting cross-section of the present invention.
Fig. 10 is a schematic view of the installed transverse distribution beam of the present invention.
Fig. 11 is a schematic view of the inventive mounted longitudinal distribution beam.
Fig. 12 is a schematic view of an embedment structure of the invention.
Fig. 13 is a schematic view of the corbel of the present invention.
The labels in the figure are: 1-a first embedded part, 2-a lower bracket, 3-a second embedded part, 4-an upper bracket, 5-an inclined strut, 6-a main longitudinal beam, 6 a-a first hinged end, 6 b-a second hinged end, 7-a transverse distribution beam, 8-a longitudinal distribution beam, 9-a high-strength steel bar, 10-an operation platform, 11-a pier column, 12-a transverse connection, 13-a chain block, 13 a-a zipper, 14-a main longitudinal beam lifting lug, 15-an inclined strut lifting lug, 16-a round steel pipe, 17-an embedded part reserved hole, 18-a groove, 19-a bracket reserved hole and 20-an I-shaped steel plate.
Detailed Description
The present invention will be described in further detail with reference to test examples and specific embodiments. It should be understood that the scope of the above-described subject matter is not limited to the following examples, and any techniques implemented based on the disclosure of the present invention are within the scope of the present invention.
Example 1
As shown in fig. 1-2, a method for mounting a fabricated 0# block bracket includes the following mounting steps:
step A: installing an embedded part: when the pier stud 11 is erected, a first embedded part 1 and a second embedded part 3 are embedded on the pier stud 11, the second embedded part 3 is located on the upper portion of the first embedded part 1, an operating platform 10 is erected below the first embedded part 1, and the operating platform 10 is connected with the pier stud 11, as shown in fig. 3.
The setting up method of the operation platform 10: firstly, pre-burying an embedded part of an operating platform 10 on a pier stud 11, wherein the embedded part of the operating platform 10 is positioned below a first embedded part 1, and the longitudinal distance between the embedded part and the first embedded part 1 is less than or equal to 1.5m, then, laying a steel pedal on one end of the embedded part extending out of the pier stud 11, welding a platform guardrail, and installing a protective net around the guardrail.
And B: installing a bracket: the bracket comprises a lower bracket 2 and an upper bracket 4, wherein the lower bracket 2 is connected to the first embedded part 1, and the upper bracket 4 is connected to the second embedded part 3, as shown in fig. 4.
The connecting method of the bracket and the embedded part comprises the following steps: the i-shaped steel plate 20 on the bracket is inserted into the groove 18 on the embedded part, so that the bracket is firmly connected with the embedded part, and the center of the bracket preformed hole 19 and the center of the embedded part preformed hole 17 are on the same straight line, as shown in fig. 12-13.
Step C: assembling a main longitudinal beam and an inclined strut: as shown in fig. 5-7, firstly, a main longitudinal beam lifting lug 14 is welded on the main longitudinal beam 6, and an inclined strut lifting lug 15 is welded on the inclined strut 5, then the first hinged end 6a of the main longitudinal beam 6 is hinged with one end of the inclined strut 5 on a flat ground, and the main longitudinal beam 6 and the inclined strut 5 are connected by a chain block 13, so that the chain block 13, the main longitudinal beam 6 and the inclined strut 5 form a tripod, wherein a hand chain wheel of the chain block 13 is connected with the main longitudinal beam lifting lug 14, and a lifting hook of the chain block 13 is connected with the inclined strut lifting lug 15.
An included angle theta is formed between the main longitudinal beam 6 and the inclined strut 5, and the included angle theta can be adjusted on the ground through the chain block.
Step D: hoisting a tripod: firstly, the tripod is integrally hoisted, and then the second hinged end 6b of the main longitudinal beam 6 is hinged with the upper bracket 4, wherein a chain block 13 with a longer zipper 13a is selected, so that the distance from the bottom of the zipper 13a of the chain block 13 to the plane of the operating platform 10 is less than or equal to 1.5m, and thus, the chain block 13 can be normally used on the operating platform 10 by an operator, as shown in fig. 8.
Step E: adjusting the inclined strut 5: because there are errors in the installation process of the embedded part and the bracket, the requirement on the installation accuracy of the inclined strut 5 and the lower bracket 2 is high, and only 1-2 mm installation margin exists, so that the inclined strut 5 and the lower bracket 2 are difficult to install in place at one time, an operator pulls the zipper 13a of the chain block 13 on the operating platform 10 to adjust the included angle theta between the inclined strut 5 and the main longitudinal beam 6, and the end of the inclined strut 5 far away from the main longitudinal beam 6 is hinged with the lower bracket 2 by adjusting the included angle theta for multiple times to complete the tripod installation, as shown in fig. 8, the chain block 13 is detached after the tripod installation is completed.
Step F: installing a cross link 12: the transverse connection 12 is connected with two inclined struts 5 on the same side of the pier stud 11, the aim is to prevent the instability of a bracket structure, the transverse connection 12 can be hoisted by a tower crane or a mobile crane, when a bolt hole of the transverse connection 12 is close to a bolt hole of the inclined strut 5, the center of the bolt hole of the transverse connection 12 is aligned with the center of the bolt hole of the inclined strut 5 through manual work, then the bolt is installed, an electric wrench is further adopted to sequentially tighten the bolt, and the installation of the transverse connection is completed, as shown in fig. 9.
Step G: mounting the transverse distribution beam 7: the transverse distribution beam 7 is arranged on the upper portion of the main longitudinal beam 6, the transverse distribution beam 7 is connected with the main longitudinal beam 6 through bolts, and further an electric wrench is adopted for bolt tightening to improve construction efficiency, as shown in fig. 10.
Step H: mounting the longitudinal distribution beam 8: the longitudinal distribution beam 8 is mounted on the upper part of the transverse distribution beam 7, the longitudinal distribution beam 8 is connected with the transverse distribution beam 7 through bolts, and the mounting steps are consistent with the mounting of the transverse distribution beam, as shown in fig. 11.
In a preferred mode, the hinge joint is in pin connection, so that the pin is convenient to install on site, and a safety pin is inserted into the end part of the pin for preventing the pin from falling off.
The mounting method of the assembly type 0# block bracket provided by the embodiment provides a whole set of mounting steps of the assembly type 0# block bracket, effectively solves the problems of high risk, low precision, poor efficiency and the like of the traditional bracket mounting, greatly improves the safety on the premise of meeting the mounting quality requirement, obviously improves the mounting precision of the bracket, obviously shortens the construction period and has better comprehensive benefits. Meanwhile, an operator can adjust the chain block through a zipper of the chain block on the operating platform to adjust the angle between the inclined strut and the main longitudinal beam, so that the inclined strut can be hinged with the lower bracket, the high-altitude operation risk of the operator for adjusting the main longitudinal beam and the inclined strut is reduced, the installation process of the assembly type 0# block bracket is safer, further, the angle between the main longitudinal beam and the inclined strut is adjusted by adopting the chain block, the operation is simple and convenient, the adjustment efficiency is high, the installation efficiency of the assembly type 0# block bracket is greatly improved, the installation period of the assembly type 0# block bracket is shortened, the cost of the chain block is low, the purchase is convenient, and the installation cost of the assembly type 0# block bracket is effectively reduced.
Example 2
On the basis of the embodiment 1, as shown in fig. 3, the method for positioning the embedded part includes the following steps:
the method comprises the following steps: when a pier stud 11 is erected, a first embedded part 1 is embedded on one side of the pier stud, the center elevation of a hole is reserved in the first embedded part 1 according to a design drawing, a steel tape is used for roughly positioning, the first embedded part 1 is preliminarily installed, furthermore, the installation elevation and the vertical plane verticality of the first embedded part 1 are accurately rechecked by the steel tape and a weight instrument, the bottom of the first embedded part 1 is preliminarily fixed by a steel bar after the requirements of the design drawing are met, further, the horizontal plane of the first embedded part 1 is adjusted by a horizontal laser instrument, the periphery of the first embedded part 1 is fixedly reinforced by the steel bar after the requirements are met, the first embedded part 1 is installed in a multi-measurement positioning mode, and the installation accuracy of the first embedded part 1 is improved.
Step two: the first embedded parts 1 are embedded on the opposite sides of the pier stud 11, and horizontal communicating pipes are used for checking to ensure that the first embedded parts 1 on the opposite sides of the pier stud and the fixed first embedded parts 1 are at the same elevation. Firstly, one end of a horizontal communicating pipe is placed at the center of a fixed first embedded part 1, then the other end of the horizontal communicating pipe is placed at the center of the first embedded part 1 on the opposite side of a pier stud 11, and whether the elevation of the first embedded part 1 on the opposite side of the pier stud 11 meets the requirement or not is checked through the method.
Step three: and (3) installing the first embedded part 1 at the opposite side of the pier stud 11 after the elevation meets the requirement, wherein the installation method is the same as that of the fixed first embedded part 1.
Step four: and (3) mounting a second embedded part 3 on the pier stud, positioning the mounting elevation of the second embedded part 3 by using the mounting elevation of the first embedded part 1 as a reference through a total station, and after determining the position, finishing mounting by adopting the same mounting steps as the first embedded part 1.
The embedded part positioning method provided by the embodiment greatly improves the installation precision of the embedded part, reduces repeated adjustment work caused by the precision problem of the embedded part in the installation process of the assembly type 0# block bracket, and improves the installation efficiency of the bracket.
Example 3
On the basis of the embodiment 1 or the embodiment 2, as shown in fig. 3, when the embedded parts are installed on the pier stud, the tensioning structure is installed, wherein the tensioning structure comprises a round steel pipe 16 and a high-strength steel rod 9, and the installation method of the tensioning structure comprises the following steps:
step S1: when installing the built-in fitting on pier stud 11, install circular steel tube 16 simultaneously, the one end of circular steel tube 16 is connected with the built-in fitting preformed hole 17 on its homonymy built-in fitting, and the other end of circular steel tube 16 also is connected with the built-in fitting preformed hole 17 on its homonymy built-in fitting, makes circular steel tube 16 form the reservation hole of running through pier stud 11, for preventing that circular steel tube 16 from appearing downwarping, the dislocation leads to follow-up high strength rod iron 9 can't pass the phenomenon of circular steel tube 16 in pier stud 11's concrete placement process, the wall thickness of circular steel tube 16 is greater than or equal to 1.2mm.
Step S2: utilize tower crane dress to install high strength rod iron 9, thereby high strength rod iron 9 passes circular steel tube 16 and runs through pier stud 11, and the length that the both ends of high strength rod iron 9 stretched out pier stud 11 surface is greater than or equal to 1m, and the purpose lies in reserving sufficient length so that follow-up stretch-draw.
And pre-tensioning the high-strength steel bar 9 after the bracket is installed, and pre-tensioning the high-strength steel bar 9 to achieve the effect of fixing the bracket, so that the bracket does not move outwards.
Carry out the secondary stretch-draw to high strength steel bar 9 after installing the tripod through adjusting the bracing, aim at prevents that 0# piece work progress high strength steel bar 9 from being stretched extension because of pretension is not enough, leads to assembled 0# piece bracket structure to take place to rotate to sink, consequently goes up the pretension that the high strength steel bar 9 that the bracket 4 located receives and must reach the maximum design bearing capacity, because bracket 2 is in the pressurized state in the work progress down, consequently the pretension that the high strength steel bar that the bracket 2 located that excels in of down only need reach the fixed bracket structure can.
Because the high-strength steel rod 9 is stressed greatly during tensioning, a backing plate for fixing the high-strength steel rod 9 needs to be reinforced before tensioning so as to prevent the backing plate from shifting in the tensioning process of the high-strength steel rod 9 and cause the backing plate and the high-strength steel rod 9 to be staggered to cause the high-strength steel rod 9 to be subjected to shearing damage, the backing plates and the nuts on two sides of the high-strength steel rod 9 are leveled to enable the center of the high-strength steel rod and the center of the bracket preformed hole 19 to be in the same straight line, reinforcing bars are adopted to perform girth welding on the side faces of the backing plate, and double nuts are adopted to jack and reinforce each side of the high-strength steel rod 9.
One end of the high-strength steel bar 9 is tensioned, and the other end of the high-strength steel bar 9 can be tensioned naturally, so that any one end of the high-strength steel bar 9 can be tensioned at a constant speed, and the tensioning is stopped when the required designed bearing capacity of the high-strength steel bar 9 is achieved, namely the tensioning is finished.
The installation and tensioning method of the tensioning structure provided by the embodiment enables the assembly type 0# block bracket to be more stable and reliable in the using process, and greatly improves the safety of the assembly type 0# block bracket in the using process.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A mounting method of a fabricated 0# block bracket is characterized by comprising the following mounting steps:
step A: installing an embedded part: a first embedded part (1) and a second embedded part (3) are embedded in a pier stud (11), the second embedded part (3) is located on the upper portion of the first embedded part (1), an operating platform (10) is erected below the first embedded part (1), and the operating platform (10) is connected with the pier stud (11);
and B: installing a bracket: the bracket comprises a lower bracket (2) and an upper bracket (4), the lower bracket (2) is connected to the first embedded part (1), and the upper bracket (4) is connected to the second embedded part (3);
and C: assembling the main longitudinal beam (6) and the inclined strut (5): hinging a first hinged end (6 a) of the main longitudinal beam (6) with one end of the inclined strut (5), and connecting the main longitudinal beam (6) and the inclined strut (5) by using a chain block (13), so that the chain block (13), the main longitudinal beam (6) and the inclined strut (5) form a tripod;
step D: hoisting the tripod: integrally hoisting the tripod, and then hinging a second hinged end (6 b) of the main longitudinal beam (6) with the upper bracket (4), wherein the height from the bottom of a zipper (13 a) of the chain block (13) to the operating platform (10) is less than or equal to 1.5m;
step E: adjusting the inclined strut (5): an operator pulls the zipper (13 a) on the operating platform (10) to adjust the angle between the inclined strut (5) and the main longitudinal beam (6), so that one end, far away from the main longitudinal beam (6), of the inclined strut (5) can be hinged with the lower bracket (2), the tripod installation is completed, and then the chain block 13 is detached;
step F: mounting the cross-link (12): the cross link (12) is connected with the inclined strut (5);
step G: mounting a transverse distribution beam (7): the transverse distribution beam (7) is connected with the main longitudinal beam (6);
step H: mounting longitudinal distribution beams (8): the longitudinal distribution beam (8) is connected with the transverse distribution beam (7).
2. The method of claim 1, wherein the step C further comprises: the main longitudinal beam lifting lug (14) is arranged on the main longitudinal beam (6), and the chain block (13) is connected with the main longitudinal beam lifting lug (14).
3. The method of claim 1, wherein the step C further comprises: the inclined strut lifting lug (15) is arranged on the inclined strut (5), and the chain block (13) is connected with the inclined strut lifting lug (15).
4. The method of claim 1, wherein the hinge is a pin connection.
5. The method for mounting the fabricated 0# block bracket of claim 1, wherein the step A comprises an embedment positioning method:
the method comprises the following steps: pre-burying the first embedded part (1) at one side of the pier stud (11), and positioning and fixing the first embedded part according to the elevation of a design drawing;
step two: pre-burying the first embedded part (1) at the opposite side of the pier stud (11), and checking the elevation of the first embedded part (1) at the opposite side of the pier stud (11) through the first embedded part (1) at one side of the pier stud (11);
step three: after elevation check of the first embedded part (1) on the opposite side of the pier stud (11) is completed, measuring and fixing the embedded part;
step four: and installing the second embedded part (3) on the pier stud (11), wherein the second embedded part (3) takes the elevation of the first embedded part (1) as a reference, and the rest installation steps are the same as those of the first embedded part (1).
6. The mounting method of the fabricated 0# block bracket of claim 1,
in the step A: when the embedded parts are installed on the pier stud (11), a tensioning structure is installed, wherein the tensioning structure comprises a round steel pipe (16) and a high-strength steel rod (9), and the installation method of the tensioning structure comprises the following steps:
step S1: when the embedded part is installed on the pier stud (11), the round steel pipe (16) is installed at the same time, and two ends of the round steel pipe (16) are connected with the embedded part preformed hole (17) in the embedded part on the same side of the round steel pipe (16), so that the round steel pipe (16) penetrates through the pier stud (11);
step S2: installing the high-strength steel rod (9), wherein the high-strength steel rod (9) penetrates through the round steel pipe (16) and the length of the two ends of the high-strength steel rod extending out of the outer surface of the pier column (11) is more than or equal to 1m;
after the step B, pre-tensioning the high-strength steel bar (9);
and E, performing secondary tensioning on the high-strength steel bar (9).
7. The method for installing a fabricated 0# block bracket of claim 6, characterized in that the high-strength steel bar (9) is tensioned in a single-side tensioning manner.
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| CN202211017650.8A CN115679814B (en) | 2022-08-23 | 2022-08-23 | Mounting method of assembly type 0# block bracket |
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| CN202211017650.8A CN115679814B (en) | 2022-08-23 | 2022-08-23 | Mounting method of assembly type 0# block bracket |
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| CN115679814B true CN115679814B (en) | 2023-04-11 |
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| CN213389752U (en) * | 2020-09-21 | 2021-06-08 | 湖南中铁五新钢模有限责任公司 | Bracket for pier top pouring construction |
| CN113430945A (en) * | 2021-07-01 | 2021-09-24 | 广西路桥工程集团有限公司 | Design method of assembly type bracket, bracket and construction method of bridge 0# block |
| CN214401417U (en) * | 2020-09-30 | 2021-10-15 | 中铁十二局集团第三工程有限公司 | Continuous beam No. 0 block rotatable bracket |
| CN217078450U (en) * | 2022-04-01 | 2022-07-29 | 四川省交通建设集团股份有限公司 | A-frame for bent cap with adjustable gradient |
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2022
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| KR20030093680A (en) * | 2002-06-05 | 2003-12-11 | 브이에스엘코리아 주식회사 | The construction method of double-t girder bridge by underslung movable scaffolding system |
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| CN107100076A (en) * | 2017-02-27 | 2017-08-29 | 中铁十九局集团有限公司 | A kind of Cast-in-place Bent Cap construction method |
| CN212477450U (en) * | 2020-07-31 | 2021-02-05 | 中铁二局第一工程有限公司 | 0# piece assembled bracket based on BIM |
| CN213389752U (en) * | 2020-09-21 | 2021-06-08 | 湖南中铁五新钢模有限责任公司 | Bracket for pier top pouring construction |
| CN214401417U (en) * | 2020-09-30 | 2021-10-15 | 中铁十二局集团第三工程有限公司 | Continuous beam No. 0 block rotatable bracket |
| CN113430945A (en) * | 2021-07-01 | 2021-09-24 | 广西路桥工程集团有限公司 | Design method of assembly type bracket, bracket and construction method of bridge 0# block |
| CN217078450U (en) * | 2022-04-01 | 2022-07-29 | 四川省交通建设集团股份有限公司 | A-frame for bent cap with adjustable gradient |
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| CN115679814A (en) | 2023-02-03 |
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